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Merge branch 'feature/dac_driver_ng' into 'master'
🔨 DAC: driver NG Closes IDF-4742 See merge request espressif/esp-idf!18097
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| /* | ||
| * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
|
||
| #include <stdint.h> | ||
| #include <string.h> | ||
| #include "freertos/FreeRTOS.h" | ||
| #include "soc/soc_caps.h" | ||
| #include "soc/dac_periph.h" | ||
| #include "hal/dac_types.h" | ||
| #include "hal/dac_ll.h" | ||
| #include "driver/rtc_io.h" | ||
| #include "esp_check.h" | ||
| #include "dac_priv_common.h" | ||
|
|
||
| typedef struct { | ||
| bool in_use; | ||
| bool is_enabled; | ||
| const char *mode; | ||
| } dac_channel_info_t; | ||
|
|
||
| static dac_channel_info_t s_dac_chan[SOC_DAC_CHAN_NUM] = { | ||
| [0 ... SOC_DAC_CHAN_NUM - 1] = { | ||
| .in_use = false, | ||
| .is_enabled = false, | ||
| .mode = NULL, | ||
| } | ||
| }; | ||
| /* Global dac spin lock for the whole DAC driver */ | ||
| portMUX_TYPE dac_spinlock = portMUX_INITIALIZER_UNLOCKED; | ||
|
|
||
| static const char *TAG = "dac_common"; | ||
|
|
||
| esp_err_t dac_priv_register_channel(dac_channel_t chan_id, const char *mode_name) | ||
| { | ||
| ESP_RETURN_ON_FALSE(chan_id < SOC_DAC_CHAN_NUM, ESP_ERR_INVALID_ARG, TAG, "channel id is invalid"); | ||
| DAC_NULL_POINTER_CHECK(mode_name); | ||
| esp_err_t ret = ESP_OK; | ||
| if (!s_dac_chan[chan_id].in_use) { | ||
| s_dac_chan[chan_id].in_use = true; | ||
| s_dac_chan[chan_id].mode = mode_name; | ||
| } else { | ||
| ret = ESP_ERR_INVALID_STATE; | ||
| } | ||
| if (ret != ESP_OK) { | ||
| ESP_LOGE(TAG, "dac channel %d has been registered by %s", chan_id, s_dac_chan[chan_id].mode); | ||
| } | ||
| return ret; | ||
| } | ||
|
|
||
| esp_err_t dac_priv_deregister_channel(dac_channel_t chan_id) | ||
| { | ||
| ESP_RETURN_ON_FALSE(chan_id < SOC_DAC_CHAN_NUM, ESP_ERR_INVALID_ARG, TAG, "channel id is invalid"); | ||
| ESP_RETURN_ON_FALSE(!s_dac_chan[chan_id].is_enabled, ESP_ERR_INVALID_STATE, TAG, "the channel is still enabled"); | ||
| esp_err_t ret = ESP_OK; | ||
| if (s_dac_chan[chan_id].in_use) { | ||
| s_dac_chan[chan_id].in_use = false; | ||
| s_dac_chan[chan_id].mode = NULL; | ||
| } else { | ||
| ret = ESP_ERR_INVALID_STATE; | ||
| } | ||
| return ret; | ||
| } | ||
|
|
||
| esp_err_t dac_priv_enable_channel(dac_channel_t chan_id) | ||
| { | ||
| ESP_RETURN_ON_FALSE(chan_id < SOC_DAC_CHAN_NUM, ESP_ERR_INVALID_ARG, TAG, "channel id is invalid"); | ||
| ESP_RETURN_ON_FALSE(s_dac_chan[chan_id].in_use, ESP_ERR_INVALID_STATE, TAG, "the channel is not registered"); | ||
|
|
||
| gpio_num_t gpio_num = (gpio_num_t)dac_periph_signal.dac_channel_io_num[chan_id]; | ||
| rtc_gpio_init(gpio_num); | ||
| rtc_gpio_set_direction(gpio_num, RTC_GPIO_MODE_DISABLED); | ||
| rtc_gpio_pullup_dis(gpio_num); | ||
| rtc_gpio_pulldown_dis(gpio_num); | ||
| DAC_RTC_ENTER_CRITICAL(); | ||
| dac_ll_power_on(chan_id); | ||
| dac_ll_rtc_sync_by_adc(false); | ||
| DAC_RTC_EXIT_CRITICAL(); | ||
| s_dac_chan[chan_id].is_enabled = true; | ||
| return ESP_OK; | ||
| } | ||
|
|
||
| esp_err_t dac_priv_disable_channel(dac_channel_t chan_id) | ||
| { | ||
| ESP_RETURN_ON_FALSE(chan_id < SOC_DAC_CHAN_NUM, ESP_ERR_INVALID_ARG, TAG, "channel id is invalid"); | ||
| ESP_RETURN_ON_FALSE(s_dac_chan[chan_id].in_use, ESP_ERR_INVALID_STATE, TAG, "the channel is not registered"); | ||
|
|
||
| gpio_num_t gpio_num = (gpio_num_t)dac_periph_signal.dac_channel_io_num[chan_id]; | ||
| rtc_gpio_deinit(gpio_num); | ||
| DAC_RTC_ENTER_CRITICAL(); | ||
| dac_ll_power_down(chan_id); | ||
| DAC_RTC_EXIT_CRITICAL(); | ||
| s_dac_chan[chan_id].is_enabled = false; | ||
|
|
||
| return ESP_OK; | ||
| } |
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